Abstract
Endothelial progenitor cells (EPCs) enter the systemic circulation in response to cues related to vascular damage and need for neovascularization. Thus, EPCs could become readily accessible informers of vascular status and enable the survey of vascular pathologies during preclinical stages. To identify EPC changes with biomarker potential, we investigated whether discrete EPC abnormalities were associated with early nonproliferative diabetic retinopathy (NPDR). Two EPC subtypes with different functions have been characterized to date - one solely committed to the endothelial lineage and the other carrying both endothelial and monocytic markers. We found that only the latter, colony-forming units (CFU)-Hill cells, manifested abnormalities in type 1 diabetic patients with NPDR compared with control subjects. The abnormalities consisted in an increased number of colonies formed in vitro and downregulation of the molecules that facilitate homing at sites of vascular injury. The abnormalities were absent in type 1 diabetic patients free of retinopathy and other complications, despite long diabetes duration, but were detected in some of the patients without clinical retinopathy after short diabetes duration. CFU-Hill cells are potential informers of diabetic microangiopathy but may be preempted from carrying out reparative functions if the molecular abnormalities compromise interactions with the damaged vascular wall.
| Original language | English |
|---|---|
| Pages (from-to) | 908-914 |
| Number of pages | 7 |
| Journal | Diabetes |
| Volume | 61 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 2012 |
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ASJC Scopus subject areas
- Internal Medicine
- Endocrinology, Diabetes and Metabolism
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Endothelial progenitor cells carrying monocyte markers are selectively abnormal in type 1 diabetic patients with early retinopathy. / Zerbini, Gianpaolo; Maestroni, Anna; Palini, Alessio; Tremolada, Gemma; Lattanzio, Rosangela; Maestroni, Silvia; Pastore, Matteo Rocco; Secchi, Antonio; Bonfanti, Riccardo; Gerhardinger, Chiara; Lorenzi, Mara.
In: Diabetes, Vol. 61, No. 4, 04.2012, p. 908-914.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Endothelial progenitor cells carrying monocyte markers are selectively abnormal in type 1 diabetic patients with early retinopathy
AU - Zerbini, Gianpaolo
AU - Maestroni, Anna
AU - Palini, Alessio
AU - Tremolada, Gemma
AU - Lattanzio, Rosangela
AU - Maestroni, Silvia
AU - Pastore, Matteo Rocco
AU - Secchi, Antonio
AU - Bonfanti, Riccardo
AU - Gerhardinger, Chiara
AU - Lorenzi, Mara
PY - 2012/4
Y1 - 2012/4
N2 - Endothelial progenitor cells (EPCs) enter the systemic circulation in response to cues related to vascular damage and need for neovascularization. Thus, EPCs could become readily accessible informers of vascular status and enable the survey of vascular pathologies during preclinical stages. To identify EPC changes with biomarker potential, we investigated whether discrete EPC abnormalities were associated with early nonproliferative diabetic retinopathy (NPDR). Two EPC subtypes with different functions have been characterized to date - one solely committed to the endothelial lineage and the other carrying both endothelial and monocytic markers. We found that only the latter, colony-forming units (CFU)-Hill cells, manifested abnormalities in type 1 diabetic patients with NPDR compared with control subjects. The abnormalities consisted in an increased number of colonies formed in vitro and downregulation of the molecules that facilitate homing at sites of vascular injury. The abnormalities were absent in type 1 diabetic patients free of retinopathy and other complications, despite long diabetes duration, but were detected in some of the patients without clinical retinopathy after short diabetes duration. CFU-Hill cells are potential informers of diabetic microangiopathy but may be preempted from carrying out reparative functions if the molecular abnormalities compromise interactions with the damaged vascular wall.
AB - Endothelial progenitor cells (EPCs) enter the systemic circulation in response to cues related to vascular damage and need for neovascularization. Thus, EPCs could become readily accessible informers of vascular status and enable the survey of vascular pathologies during preclinical stages. To identify EPC changes with biomarker potential, we investigated whether discrete EPC abnormalities were associated with early nonproliferative diabetic retinopathy (NPDR). Two EPC subtypes with different functions have been characterized to date - one solely committed to the endothelial lineage and the other carrying both endothelial and monocytic markers. We found that only the latter, colony-forming units (CFU)-Hill cells, manifested abnormalities in type 1 diabetic patients with NPDR compared with control subjects. The abnormalities consisted in an increased number of colonies formed in vitro and downregulation of the molecules that facilitate homing at sites of vascular injury. The abnormalities were absent in type 1 diabetic patients free of retinopathy and other complications, despite long diabetes duration, but were detected in some of the patients without clinical retinopathy after short diabetes duration. CFU-Hill cells are potential informers of diabetic microangiopathy but may be preempted from carrying out reparative functions if the molecular abnormalities compromise interactions with the damaged vascular wall.
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U2 - 10.2337/db11-1197
DO - 10.2337/db11-1197
M3 - Article
VL - 61
SP - 908
EP - 914
JO - Diabetes
JF - Diabetes
SN - 0012-1797
IS - 4
ER -